Tilling tool



Oct. 16, 1956 K, w ZUNK 2,766,672

TILLING TOOL Filed OCT.. 2, 1955 2 Sheets-She l Kenne/h WZL/nk mVENroR.

i'l. `26 24 (mi M f Oct. 16, 1956 Filed Oct. 2, 1953 Fig. 3

K. W, ZUNK TILLING TOOL 2 Sheets-Sheet 2 Kenneth M. Zun/r INVENTOR.

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rates nite This invention relates generally to agricultural machineryand pertains more particularly to an improved form of deep tillage tool.

A primary object of this invention is to provide an improved form oftillage tool which includes vertically adjustable spring teeth mountedbehind rotatable disks which prepare the top soil by cutting trash andvegetation ahead of the spring teeth so that the latter may efficientlyperform their function of deep tillage without becoming clogged.

Another object of this invention is to provide an improved deep tillagetool in conformity with the foregoing object which is constructed in asimple yet ecient manner and which lends itself readily to massproduction.

Still another object of this invention is to provide an improved tillagetool which will simultaneously cut trash and vegetation on the topsurface of the soil and Work the same into the top soil while at thesame time performing deep tillage action at any desired depth to providebetter drainage for the land being worked.

These together with other objects and advantages which will becomesubsequently apparent reside in the details of construction andoperation as more fully hereinafter described and claimed, referencebeing had to the accompanying drawings forming a part hereof, whereinlike numerals refer to like parts throughout, and in which:

Figure l is a top plan view of the tilling tool;

Figure 2 is a rear elevational view of the assembly shown in Figure l;

Figure 3 is a vertical section taken substantially along the plane ofsection line 3 3 of Figure l showing details of the spring toothmounting;

Figure 4 is an enlarged section taken through one of the spring toothmembers and its associated supporting mechanism; and

Figure 5 is a horizontal section taken substantially along the plane ofsection line 5 5 of Figure 4.

Referring now more particularly to the drawings, the tilling toolincludes a front tubular frame member 10, a rear tubular frame member 12and various longitudinal frame members 14 interconnecting the front andrear frame members. As seen most clearly in Figures 3 and 4, each of theframe members and 12 is provided with a plurality of depending bars orstraps 16 for the purpose of mounting the disk assemblies 18.

Referring now more particularly to Figure 2, it will be seen that eachof these bars 16 terminates at its lower end in a boss 20 which providesa bearing for the axle 22 provided at opposite ends with flange portions24 which are rigidly secured to the disk members 26. ln this manner, itwill be understood that the disk members 26 provide a support for theframe assembly as the same is moved along over the ground surface behinda towing vehicle (not shown). In this respect, it will be noted that apair of forwardly extending converging draft members 2S are secured atone end to the rear frame member 12 and that a pair of upwardly inclined2,766,672 Patented Oct. 16, 1956 ICC draft members 30 are secured attheir lower ends to the front frame member 10. These various draftmembers 28 and 30 may be suitably secured together at their upper endswith the members 30 being spaced apart to receive therebetween the upperidler link of a tractor hydraulic lift system, while the tongues 32extend forwardly from the frame member 10 for connection to the lowerlift arms of a powered tractor.

Bracket assemblies indicated generally by the reference character 34 areprovided in conjunction with each of the straps 16 on the rear framemember 12, these bracket assemblies include a pair of horizontal platemembers 36 and 38 which are disposed on opposite sides of the members 16in the manner shown most clearly in Figure 5. A bolt 40 extends betweenthese plate members forwardly of the straps 16 and a support plate 42 isrigidly secured between these plate members rearwardly of the supportmembers 16, so that the bracket assemblies 34 are slidably carried bythe support members 16. The bracket assemblies also include the uprightleg portions 44 and 46 secured rigidly at their lower ends to the platemembers 36 and 3S, respectively, and being apertured at their upper endsto receive the pivot bolt or pin 48 for connection to one end of anadjusting arm 50.

The plates 42 are suitably apertured to receive a number of fasteningmembers S2 which extend therethrough for rigidly securing the springtooth members 54 in depending relation to the plate in the manner shown.Members 54 may be provided at their lower ends with shoes 56 suitablysecured as by rivets 58 to the main spring elements 66 which depend inarcuate fashion from the plate 42 and which may be reinforced by thebacking spring member 62, all the spring elements being secured togetheras by the clip member 64.

An adjusting rod 66 extends through suitable journal apertures in theintermediate of the longitudinal frame members 14, and this bar forms abase for connection of the various adjusting arms 50, as will be seenmost clearly in Figures l and 3. An adjusting lever 68 is securedadjacent one end of bar 66 and cooperates with a suitable sector member70 secured to the upper surface of one of the frame members 14 to holdthe bar 66 in various adjusted rotated positions, any suitable latchingmechanism being provided for this purpose for cooperation with the teeth72 on the sector 70.

Bracket assemblies 74 are utilized in conjunction with the strap members16 on the forward frame member 1t) are similar in construction to thepreviously described bracket members inasmuch as they include spacedhorizontal plate members 76 straddling the straps 16 and provided withthe guide bolts 78 forwardly of the members 16 and with plate members S0rearwardly of these members, the plates 80 forming a support for thespring tooth elements 32 depending therefrom. Upright leg members 84 aresecured at their lower ends to the upper surface of the plate Si), andare apertured to receive the pivot pins 36 at their upper ends forpivotal connection to adjusting arms 83 carried by the transverse bar 90which is journaled in the innermost frame members 14 in a manner similarto the bar 66. A sector 91 and lever 92 are associated with the bar 90for adjusting the same into the desired position.

in operation, it will be manifest that the disk assemblies support theframe for travel over the ground surface, and that these disk membersare preferably disposed in angular relation as shown for mosteffectively cutting or breaking up the top soil, including any trash orvegetation thereon. A spring tooth is associated with each pair of disksand is disposed rearwardly thereof midway between the disks so thatthese teeth will not become clogged during operation, any foreignmaterial being effectively broken up or cut by the disks. The variousbracket assemblies 34 and 74 are held in any desired vertical adjustedposition with respect to the strap members 16 by virtue of themanipulation of the lever members 68 and 92 so that -any desired depthof deep tillage by the spring tooth members may be obtained. In thismanner, the disks not only perfor-m 'the function of preparing the topsoil and thoroughly mixing the vegetation into the same, but theyprotect the spring tooth elements against clogging, allowing theseelements to be adjusted to a depth beneath the soil level to such anextent as to engage the hard pan beneath the top soil so as to providebetter drainage and cultivation of the soil. The various d isk andspring tooth assemblies are so disposed with respect to each other onthe frame assembly such that effective tilling of the soil isaccomplished throughout the Width of the frame, that is, the variousassemblies are disposed in staggered relation.

-From the foregoing, the construction and operation of the device willbe readily understood, and further explanation is believed to beunnecessary. However, since numerous moditications and changes willreadily occur to those skilled in the art, it is not desired to limitthe invention to the exact construction shown and described, andaccordingly, all suitable modifications and equivalents may be resortedto, falling within the scope of the appended claims.

What is claimed as new is as follows:

l. A tilling tool comprising a frame, a plurality of sup-V port membersdepending from said frame, disking assemblies comprising a pair ofspaced vertical disk members support members, bracket assemblies carriedon the frame in reciprocable vertically adjustable engagement with saidsupport members, said bracket assemblies including a portion circumposedabout an intermediate portion of the support members, tooth elementscarried in depending relationship on the bracket assemblies, said toothelements including soil-engaging shoe portions extending rearwardly inunderlying relationship between the disk members of each diskingassembly, and vertical adjusting means carried on said frame inengagement with an upper end portion of the bracket assemblies forvertically adjusting the shoe portions relative to the disk members.

2. The combination as set forth in claim'l wherein said verticaladjusting means includes a horizontally disposed bar rotatably supportedon said frame, vertically pivotal levers secured at one end onintermediate spaced portions of said bar, the levers having the outerend pivotally connected to the upper end portions of said bracketassembly, and adjusting lever and latch means carried on said frame inengagement with said horizontal bar.

References Cited in the tile of this patent UNITED STATES PATENTS545,170 Poole Aug. 27, 1895 576,877 Miller Feb. 9, 1897 1,059,936Hamilton Apr. 22, 1913 1,328,638 Ogden Jan. 20, 1920 1,551,477 FlemingAug. 25, 1925 1,642,277 Turner Sept. 13, 1927 1,807,827 Brown June 2,1931 2,355,519k Dunham Aug. 8, 1944

